1 the healthiest
2 the most quiet/the quietest
3 the fastest
4 the most casual
5 the hottest
6 the most difficult
7 the noisiest
8 the easiest

c. What do you think is...
1 ... the most interesting book to read?
2 ... the most exciting place to visit?
3 ... the best food to eat?
4 ... the funniest person you know?
5 ... most comfortable way to travel?
6 ... the worst show on TV?
7 ... the best song in the charts at the moment?